From Sega Retro

Kodai Ouja Kyouryuu King D-Kids Adventure: Asoberu Kyouryuu Zukan (古代王者恐竜キングDキッズアドベンチャー あそべる恐竜図鑑) is a game developed and published by Sega for the Apple iPad. It is based on the Dinosaur King card game and anime series.

Initially the app was an iPad exclusive, until wider iOS device support was added. It has since been removed from iTunes.